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  1. The list of grammar and punctuation topics is to the left. Click on one to see the explanation in this part of the screen. You may scroll down the list to the left to see the rest of the topics.

  2. If you click on one of the letters in the row at the top of this screen, the topics beginning with that letter will appear in the list to the left so you can locate the topic you want to read about. Click on the topic to see the explanation in this part of the screen.